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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'dbfd0f72e7db29b4bb9d135bd2f90bee660cd9649465aa1483f45c1b0e7d5878' 
  AND token = 'zHVP5Ef7eCcX4VffdPwD3SZAQaRSnjoz2qLh1ROhzXU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}